Audi Engine Crankshaft Main Bearing - Kolbenschmidt 057198491A

Product Information

An engine crankshaft main bearing is a crucial component that supports the crankshaft in the engine block and allows it to rotate smoothly. These bearings are typically metal shells lined with a soft, durable material (like babbitt or a copper-lead alloy) and sit between the crankshaft journals and the engine block, and helps maintain proper oil clearance for lubrication.

• Knocking or Thumping Noise from Engine (Rod Knock or Main Knock): Often heard at low RPM or under load; a classic “engine knock” indicates excessive bearing clearance.
• Low Oil Pressure: Worn bearings increase oil clearance, causing a drop in oil pressure readings.
• Metal Shavings in Oil: Bearing material can wear off and contaminate engine oil.

About Kolbenschmidt

The KS Kolbenschmidt division develops, produces and markets gasoline and diesel engine pistons for cars and commercial vehicles and is among the foremost players in its segment. Other products include pistons for two-cycle and compressor engines as well as large pistons for stationary, marine and locomotive engines.

Upgrading power density as well as achieving further reductions in fuel consumption and emissions have for years now been the factors driving the development of new types of pistons at KS Kolbenschmidt.

Neckarsulm-based KS Kolbenschmidt GmbH, an international company, harnesses to maximum effect the synergies among its various units: large-bore, commercial vehicle and car pistons. Available for this purpose is the experience derived from local development departments and the development centers and production facilities in Europe, North and South America and Asia.

For years now, many notable OEMs have been regular customers of this division. The chief markets are Europe, North and South America, and Asia.